Finding the Fourth Proportional to 92,145.07, 127,128.37 and 55,858.15

Step by Step Solution

1. Step 1: Write the proportion equation
   92,145.07 : 127,128.37 = 55,858.15 : x
2. Step 2: Convert to fraction form
   92,145.07/127,128.37 = 55,858.15/x
3. Step 3: Cross multiply
   92,145.07x = 127,128.37 × 55,858.15
4. Step 4: Simplify right side
   92,145.07x = 7,101,154,785.43
5. Step 5: Solve for x
   x = 7,101,154,785.43/92,145.07
6. Step 6: Final answer
   x = 77,064.95